长沙冰雪世界工程临百米深矿坑吊脚楼结构地库支模体系应用

Application of Bailey Support System for Stilted Building Structure on the Side of Changsha Ice and Snow World Project Hundred Meters Excavation

长沙冰雪世界工程配套地库一侧临百米深坑而建,底板约1/3面积下部悬空,为吊脚楼结构,悬空最大高度约30m。其上部结构部分悬挑,悬挑最大长度约9m。深坑岩壁溶洞裂隙发育,地势凹凸不平,采用传统钢管脚手架搭设支模体系,安全隐患较大。针对工程难点,利用贝雷架承载力高、跨度大的优势,灵活组合运用,跨越崖壁,形成封闭钢平台,在其上支设钢管脚手架,安全可靠。详细介绍支模方案、支模体系设计及悬挑端支模体系设计等。

The basement side of Changsha ice and snow world project is built near a hundred meter deep excavation,and the bottom plate is nearly 1/3 of the area suspended,which is a stilted building structure,with the maximum suspended height of nearly 30m.The superstructure is partially cantilevered,with the maximum cantilevered length of nearly 9m.The karst cave in the deep excavation is developed with uneven terrain.The traditional steel pipe scaffold is used to set up the formwork system,which has great potential safety hazard.In view of the difficulties of the project,using the advantages of high bearing capacity and large span of Bailey frame,flexible combination of use,crossing the cliff,forming a closed steel platform,and erecting steel pipe scaffold on it,safe and reliable.In this paper,the supporting scheme,the supporting system design and the cantilever end supporting system design are introduced in detail.